In an example, an integrated circuit includes a communication and control unit. The communication and control unit controls an inverter that applies an alternating current output signal to a transmission coil for reception by a receiver. The communication and control unit causes the inverter to provide a first and second transmit powers to the transmission coil, and the communication unit receives a first and second power received signals from the receiver in response to the first and second transmit powers. The communication and control unit determines a first gain and offset using the first transmit power, the first power. When a third transmit power greater than the second transmit power is transmitted by the transmission coil, the communication and control unit determines a second gain and a second offset using the first transmit power, the first power received signal, the third transmit power and a third power received signal.
Legal claims defining the scope of protection. Each claim is shown in both the original legal language and a plain English translation.
1. An integrated circuit, comprising: a communication and control unit including: a control unit for controlling an inverter, the inverter configured to convert an input voltage to an alternating current output signal for application to a transmission coil for reception by a receiver; and a communication unit for demodulating transmissions from the receiver; the control unit configured to cause the inverter to provide a first transmit power to the transmission coil and the communication unit configured to receive a first power received signal from the receiver in response to the first transmit power, the control unit further configured to cause the inverter to provide a second transmit power to the transmission coil and the communication unit configured to receive a second power received signal from the receiver in response to the second transmit power; the communication and control unit using the first transmit power, the first power received signal, the second transmit power and the second power received signal to determine a first gain and a first offset, in which, when a third transmit power greater than the second transmit power is transmitted by the transmission coil and a third power received signal is received by the communication unit from the receiver in response to the third transmit power, the communication and control unit determines a second gain and a second offset using the first transmit power, the first power received signal, the third transmit power and the third power received signal.
This invention relates to wireless power transmission systems, specifically to an integrated circuit for controlling and communicating with a receiver in a wireless power transfer system. The system addresses the challenge of accurately determining power transfer efficiency and calibration between a transmitter and receiver, which is critical for optimizing power delivery and ensuring reliable communication. The integrated circuit includes a communication and control unit with a control unit and a communication unit. The control unit regulates an inverter that converts an input voltage to an alternating current (AC) output signal, which is applied to a transmission coil for wireless power transfer to a receiver. The communication unit demodulates signals received from the receiver. The control unit adjusts the inverter to provide different transmit power levels to the transmission coil. The communication unit receives corresponding power received signals from the receiver in response to these power levels. The system uses at least three transmit power levels to determine gain and offset values, which characterize the relationship between transmitted and received power. Initially, the control unit transmits a first and second power level, and the communication unit receives the corresponding received power signals. These values are used to calculate a first gain and offset. When a third, higher power level is transmitted, the system recalculates the gain and offset using the first and third power levels. This dynamic calibration ensures accurate power transfer and communication, improving efficiency and reliability in wireless power systems.
2. The integrated circuit of claim 1 in which a foreign object detection is performed before determining the second gain and the second offset.
The invention relates to integrated circuits, specifically those used in capacitive sensing systems, such as touchscreens or proximity sensors. The problem addressed is improving the accuracy and reliability of capacitive sensing by detecting and mitigating interference from foreign objects, such as water droplets or conductive debris, which can distort sensor readings. The integrated circuit includes a capacitive sensing system that measures changes in capacitance to detect touch or proximity events. The system adjusts its gain and offset values to compensate for environmental factors and ensure accurate readings. Before applying these adjustments, the circuit performs a foreign object detection process to identify and account for any external interference. This detection step ensures that the gain and offset values are not corrupted by transient or persistent foreign objects, leading to more reliable sensor performance. The foreign object detection may involve analyzing sensor data for patterns indicative of interference, such as unusual capacitance fluctuations or signal noise. Once detected, the system may apply corrective measures, such as filtering or ignoring affected readings, before proceeding with the gain and offset adjustments. This preemptive check enhances the robustness of the capacitive sensing system, particularly in environments where foreign objects are likely to be present. The overall result is a more accurate and stable sensing solution for touch and proximity applications.
3. The integrated circuit of claim 1 in which, when a fourth transmit power greater than the third transmit power is transmitted by the transmission coil and a fourth power received signal is received by the communication unit from the receiver in response to the fourth transmit power, the communication and control unit determines a third gain and a third offset using the first transmit power, the first power received signal, the fourth transmit power and the fourth power received signal.
This invention relates to wireless power transmission systems, specifically improving power transfer efficiency and communication between a transmitter and a receiver. The problem addressed is accurately determining power transfer characteristics to optimize energy delivery and communication reliability. The system includes an integrated circuit with a transmission coil for wirelessly transmitting power to a receiver. A communication unit receives power-related signals from the receiver, while a control unit adjusts transmission parameters. The circuit measures power transfer efficiency by comparing different transmit power levels and corresponding received power signals. Specifically, when a higher transmit power is used, the system calculates a gain and offset value based on the power difference and received signal variations. These values help compensate for environmental factors and improve power transfer accuracy. The control unit uses this data to dynamically adjust transmission parameters, ensuring efficient and reliable power delivery. The invention enhances wireless power systems by providing real-time calibration and adaptive control, addressing challenges in maintaining consistent performance across varying distances and conditions.
4. The integrated circuit of claim 3 in which in which a foreign object detection is performed before determining the third gain and the third transmit power.
The invention relates to integrated circuits for wireless communication systems, specifically addressing the challenge of optimizing power and gain settings in the presence of foreign objects that may interfere with signal transmission. The integrated circuit includes a transmitter configured to transmit a signal at a first transmit power and a receiver configured to receive a reflected signal. The system determines a first gain and a first transmit power based on the reflected signal, then adjusts to a second gain and a second transmit power for subsequent transmissions. If a foreign object is detected, the system performs additional foreign object detection before determining a third gain and a third transmit power. This ensures reliable communication by dynamically adapting to environmental changes. The foreign object detection may involve analyzing the reflected signal for anomalies or using additional sensors to identify obstructions. The integrated circuit may also include a processor to execute these adjustments and a memory to store calibration data. The system aims to improve signal integrity and efficiency in wireless communication by mitigating interference from foreign objects.
5. The integrated circuit of claim 1 in which the communication and control unit determines the second gain and the second offset if the third transmit power is more than a selected threshold greater than the second transmit power.
This invention relates to integrated circuits for power control in wireless communication systems, specifically addressing the challenge of dynamically adjusting transmit power to optimize performance while minimizing interference. The integrated circuit includes a communication and control unit that monitors transmit power levels and adjusts gain and offset values to maintain signal quality. The system compares a third transmit power level to a second transmit power level and, if the difference exceeds a selected threshold, the communication and control unit calculates and applies a second gain and a second offset to the transmit signal. This adjustment ensures that the transmit power remains within desired operational limits while compensating for variations in signal conditions. The integrated circuit also includes a power amplifier and a power detector to measure the actual transmit power, providing feedback for real-time adjustments. The communication and control unit processes this feedback to determine the appropriate gain and offset values, ensuring efficient power management and reducing the risk of signal distortion or interference. This solution is particularly useful in wireless communication devices where precise power control is critical for maintaining signal integrity and compliance with regulatory standards.
6. The integrated circuit of claim 1 in which the communication and control unit does not determine the second gain and the second offset in response to the third transmit power and the third power received signal unless the third transmit power and the third power received signal exceed a predetermined threshold which is greater than the second transmit power.
This invention relates to an integrated circuit for wireless communication systems, specifically addressing the challenge of optimizing power control and signal calibration in radio frequency (RF) transceivers. The integrated circuit includes a communication and control unit that adjusts gain and offset values for signal processing based on transmit power and received power measurements. The system dynamically updates these values to improve signal accuracy and efficiency. The communication and control unit monitors transmit power and received power signals to determine adjustments for gain and offset parameters. However, these adjustments are only made when the measured transmit power and received power exceed a predetermined threshold, which is higher than a previously established transmit power level. This conditional adjustment prevents unnecessary recalibration when signal conditions are stable, reducing computational overhead and power consumption while maintaining signal integrity. The threshold ensures that adjustments are only made when significant changes in signal conditions occur, improving system reliability and performance. The integrated circuit is designed to operate in environments where signal conditions vary, such as in mobile or wireless communication devices. By selectively updating gain and offset values, the system avoids frequent recalibration, extending battery life and reducing processing load. The invention is particularly useful in applications requiring precise signal control, such as in 5G or IoT devices, where power efficiency and signal accuracy are critical.
7. A power transmitter comprising: a transmission coil; an inverter for converting an input voltage to an alternating current output signal for application to the transmission coil for reception by a receiver; and a communication and control unit for demodulating transmissions from the receiver and controlling the inverter, the communication and control unit causing the inverter to provide a first transmit power to the transmission coil and to receive a first power received signal from the receiver in response to the first transmit power, causing the inverter to provide a second transmit power to the transmission coil and receive a second power received signal from the receiver in response to the second transmit power, the communication and control unit using the first transmit power, the first power received signal, the second transmit power and the second power received signal to determine a first gain and a first offset, in which, when a third transmit power greater than the second transmit power is transmitted by the transmission coil and a third power received signal is received from the receiver in response to the third transmit power, the communication and control unit determines a second gain and a second offset using the first transmit power, the first power received signal, the third transmit power and the third power received signal.
This invention relates to wireless power transmission systems, specifically improving power transfer efficiency and accuracy in inductive power transfer between a transmitter and a receiver. The system addresses the challenge of dynamically adjusting transmit power to optimize energy delivery while accounting for varying load conditions and coupling efficiency between the transmitter and receiver. The power transmitter includes a transmission coil, an inverter, and a communication and control unit. The inverter converts an input voltage into an alternating current signal, which is applied to the transmission coil to wirelessly transmit power to a receiver. The communication and control unit demodulates signals from the receiver and regulates the inverter's output. To optimize power transfer, the system operates in a calibration phase where it transmits power at two different levels (first and second transmit powers) and receives corresponding power received signals from the receiver. Using these measurements, the unit calculates a first gain and offset, which characterize the relationship between transmitted and received power. When transmitting at a higher power level (third transmit power), the system recalculates the gain and offset using the initial measurements and the new power level. This adaptive approach ensures accurate power delivery by dynamically adjusting for changes in system conditions, such as receiver position or load variations. The method improves efficiency and reliability in wireless power transmission systems.
8. The power transmitter of claim 7 in which in which a foreign object detection is performed before determining the second gain and the second offset.
Wireless power transmission systems face challenges in efficiently transferring power while ensuring safety, particularly when foreign objects are present in the charging area. Foreign objects can interfere with power transfer, cause overheating, or pose safety risks. To address this, a power transmitter includes a foreign object detection (FOD) system that identifies and assesses the presence of foreign objects before adjusting power transmission parameters. The transmitter first performs FOD to detect any foreign objects in the charging zone. If detected, the system then determines a second gain and a second offset for the power transmission circuit to optimize power transfer while mitigating the effects of the foreign object. The second gain and offset are distinct from initial values used under normal operating conditions, ensuring safe and efficient power delivery even in the presence of foreign objects. The FOD system may use techniques such as impedance monitoring, temperature sensing, or signal analysis to detect foreign objects. By dynamically adjusting the gain and offset based on FOD results, the transmitter maintains reliable power transfer while minimizing risks associated with foreign objects. This approach enhances safety and efficiency in wireless charging applications.
9. The power transmitter of claim 7 in which, when a fourth transmit power greater than the third transmit power is transmitted by the transmission coil and a fourth power received signal is received from the receiver in response to the fourth transmit power, the communication and control unit determines a third gain and a third offset using the first transmit power, the first power received signal, the fourth transmit power and the fourth power received signal.
Wireless power transmission systems face challenges in accurately determining power transfer efficiency and optimizing transmission parameters. Existing solutions often struggle with calibration and compensation for varying environmental and operational conditions, leading to inefficiencies or over/under-powering of receivers. This invention addresses these issues by providing a power transmitter with enhanced calibration capabilities. The transmitter includes a transmission coil for wirelessly transmitting power to a receiver and a communication and control unit. The control unit is configured to transmit a first transmit power and receive a corresponding first power received signal from the receiver. It then transmits a second transmit power and receives a second power received signal. Using these signals, the control unit calculates a first gain and a first offset, which are used to compensate for discrepancies between transmitted and received power levels. Additionally, when a third transmit power is transmitted and a third power received signal is received, the control unit determines a second gain and a second offset using the first and third transmit powers and their corresponding received signals. This iterative process allows for dynamic adjustment of power transmission parameters. Furthermore, if a fourth transmit power greater than the third transmit power is transmitted and a fourth power received signal is received, the control unit calculates a third gain and a third offset using the first, third, and fourth transmit powers and their corresponding received signals. This multi-point calibration ensures accurate power transfer efficiency and reliable operation under varying conditions.
10. The power transmitter of claim 9 in which in which a foreign object detection is performed before determining the third gain and the third offset.
Wireless power transmission systems transfer energy from a transmitter to a receiver through electromagnetic fields. A key challenge is ensuring efficient and safe power transfer while detecting and mitigating the presence of foreign objects that could interfere with the transmission or pose safety risks. Foreign objects, such as metal or conductive materials, can disrupt the magnetic field, reduce efficiency, or cause overheating. This invention relates to a power transmitter that includes a power conversion circuit, a resonant circuit, and a control circuit. The power conversion circuit generates an alternating current (AC) signal, which is then converted into a resonant signal by the resonant circuit. The control circuit adjusts the gain and offset of the resonant signal to optimize power transfer efficiency. Before adjusting the gain and offset, the system performs foreign object detection to ensure no interfering objects are present. This detection step helps prevent potential hazards and ensures reliable power transmission. The control circuit then determines the optimal gain and offset values based on the detection results, allowing for efficient and safe power transfer to the receiver. The system may also include additional features such as impedance matching and feedback mechanisms to further enhance performance.
11. The power transmitter of claim 7 in which the communication and control unit determines the second gain and the second offset if the third transmit power is over a selected threshold greater than the second transmit power.
Wireless power transmission systems face challenges in efficiently delivering power to receiving devices while maintaining stable communication and control. Existing systems may struggle with power fluctuations, leading to inefficiencies or disruptions in power transfer. This invention addresses these issues by dynamically adjusting transmission parameters based on power levels to optimize performance. The system includes a power transmitter with a communication and control unit that monitors transmit power levels. If the transmit power exceeds a predefined threshold, the unit calculates and applies a second gain and a second offset to adjust the power transmission. These adjustments ensure stable power delivery and reliable communication, preventing disruptions caused by excessive power levels. The transmitter also includes a power amplifier and a power amplifier driver that work together to regulate the output power based on the adjusted parameters. Additionally, the system may incorporate a power amplifier bias circuit to further refine power control. The communication and control unit continuously evaluates power levels and makes real-time adjustments to maintain optimal transmission conditions. This adaptive approach improves efficiency and reliability in wireless power transfer.
12. The power transmitter of claim 7 in which the communication and control unit is further configured for modulating transmissions to the receiver.
Wireless power transmission systems face challenges in efficiently delivering power while maintaining reliable communication between transmitters and receivers. Existing systems often struggle with interference and signal degradation, leading to reduced power transfer efficiency and communication reliability. A power transmitter includes a power conversion unit that converts input power into a form suitable for wireless transmission, such as electromagnetic waves or resonant coupling. The transmitter also includes a communication and control unit that manages the power transfer process, ensuring proper alignment and synchronization with the receiver. To enhance communication reliability, the communication and control unit is configured to modulate transmissions to the receiver. This modulation can involve adjusting signal parameters like frequency, amplitude, or phase to optimize data transfer and reduce interference. The transmitter may also include a sensing unit to detect the receiver's position and orientation, allowing for dynamic adjustments to maintain efficient power transfer. By integrating modulation capabilities into the communication and control unit, the transmitter improves signal integrity and reduces errors during data exchange, leading to more stable and efficient wireless power delivery. This approach is particularly useful in applications requiring precise control, such as medical devices, consumer electronics, and industrial equipment.
13. A method for operating an integrated circuit comprising: causing an inverter to provide a first transmit power to a transmission coil; receiving a first power received signal from a receiver receiving power transmitted from the transmission coil in response to the first transmit power; causing the inverter to provide a second transmit power to the transmission coil; receiving a second power received signal from the receiver; determining a first gain and a first offset using the first transmit power, the first power received signal, the second transmit power and the second power received signal to determine received from the receiver; causing the inverter to provide a third transmit power to the transmission coil; receiving a third power received signal from the receiver; determining, if the third transmit power is greater than the second transmit power, a second gain and a second offset using the first transmit power, the first power received signal, the third transmit power and the third power received signal.
This invention relates to wireless power transmission systems, specifically methods for optimizing power transfer efficiency between a transmitter and a receiver. The problem addressed is accurately determining the relationship between transmitted and received power to improve efficiency and reliability in wireless charging systems. The method involves a transmitter with an inverter and a transmission coil. The inverter provides different transmit power levels to the coil, and the receiver measures the corresponding received power. The transmitter first sends a first transmit power and receives a first power received signal from the receiver. Then, it sends a second transmit power and receives a second power received signal. Using these values, the transmitter calculates a first gain and a first offset, which represent the linear relationship between transmitted and received power. If the third transmit power is higher than the second, the transmitter sends a third transmit power and receives a third power received signal. It then calculates a second gain and a second offset using the first and third transmit powers and their corresponding received signals. This process allows the system to dynamically adjust power transmission based on real-time feedback, improving efficiency and performance in wireless power transfer.
14. The method of claim 13 in which in which a foreign object detection is performed before determining the second gain and the second offset.
A system and method for improving signal processing in imaging devices, particularly for detecting and mitigating interference from foreign objects. The technology addresses the challenge of maintaining accurate signal quality in imaging systems when foreign objects, such as dust or debris, obstruct the optical path or sensor array. The method involves adjusting signal processing parameters dynamically to compensate for such obstructions. Before determining a second gain and a second offset for signal correction, the system performs a foreign object detection step to identify the presence and location of obstructions. This detection allows the system to apply targeted adjustments to the gain and offset values, ensuring that the imaging output remains consistent and free from artifacts caused by foreign objects. The method may also include an initial calibration step to establish baseline gain and offset values, followed by periodic or event-triggered recalibration to account for changes in environmental conditions or sensor performance. The system may use various detection techniques, such as analyzing signal noise patterns or comparing expected versus actual sensor responses, to identify foreign objects. The adjustments to gain and offset are then applied to the raw sensor data to produce a corrected output, improving image quality and reliability in applications where precision is critical, such as medical imaging or industrial inspection.
15. The method of claim 13 in which, when a fourth transmit power greater than the third transmit power is transmitted and a fourth power received signal is received from the receiver in response to the fourth transmit power, determining a third gain and a third offset using the first transmit power, the first power received signal, the fourth transmit power and the fourth power received signal.
This invention relates to wireless communication systems, specifically methods for calibrating transmit power and received signal measurements to improve communication accuracy. The problem addressed is the need to accurately determine the gain and offset of a communication system to compensate for variations in signal transmission and reception, ensuring reliable data exchange. The method involves transmitting a first signal at a first transmit power and receiving a corresponding first power received signal from a receiver. A second signal is then transmitted at a second transmit power, and a second power received signal is received. Using these measurements, a first gain and a first offset are calculated to characterize the system's response. Subsequently, a third signal is transmitted at a third transmit power, and a third power received signal is received. The first gain and first offset are then adjusted to produce a second gain and a second offset, refining the system calibration. If a fourth signal is transmitted at a fourth transmit power (greater than the third transmit power) and a fourth power received signal is received, the method further determines a third gain and a third offset. This is done by analyzing the first transmit power, the first power received signal, the fourth transmit power, and the fourth power received signal. The additional measurements improve the accuracy of the calibration, ensuring the system can compensate for nonlinearities and other distortions in the signal path. This iterative process allows for precise adjustments, enhancing the reliability of wireless communication.
16. The method of claim 15 in which in which a foreign object detection is performed before determining the third gain and the third offset.
A system and method for improving the accuracy of sensor measurements, particularly in environments where interference or noise may affect readings. The invention addresses the challenge of maintaining precise sensor calibration in dynamic or noisy conditions, which can lead to inaccurate data and unreliable system performance. The method involves a multi-step calibration process to compensate for environmental factors and ensure consistent measurement accuracy. The process begins with an initial calibration phase where a first gain and a first offset are determined for the sensor based on reference measurements. This establishes a baseline calibration. A second calibration phase then adjusts the gain and offset based on additional reference measurements, refining the calibration further. Before applying a final calibration adjustment, the system performs a foreign object detection to identify any obstructions or contaminants that may affect sensor readings. If detected, the system may adjust or delay the calibration process. After ensuring no foreign objects are present, a third gain and a third offset are determined to finalize the calibration, ensuring optimal sensor performance under varying conditions. This approach enhances measurement reliability by dynamically compensating for environmental and operational changes.
17. The method of claim 13 further comprising determining the second gain and the second offset if the third transmit power is over a selected threshold greater than the second transmit power.
A method for adjusting signal transmission parameters in a communication system involves dynamically modifying gain and offset values to optimize signal quality. The system monitors transmit power levels and compares them to predefined thresholds to determine when adjustments are needed. Specifically, if a third transmit power level exceeds a selected threshold that is greater than a second transmit power level, the method calculates and applies a second gain and a second offset to the signal. These adjustments help maintain signal integrity and performance under varying conditions. The method may also include determining a first gain and a first offset based on a first transmit power level, which is lower than the second transmit power level. The adjustments are applied to compensate for signal degradation or interference, ensuring reliable communication. The system dynamically adapts to changing conditions by continuously evaluating transmit power levels and applying the appropriate gain and offset corrections. This approach improves signal quality and reduces errors in data transmission.
18. The method of claim 13 in which the second gain and the second offset are determined if the third transmit power and the third power received signal occur before a selected period of time after the first transmit power.
This invention relates to wireless communication systems, specifically to methods for adjusting gain and offset values in power control mechanisms to improve signal transmission accuracy. The problem addressed is ensuring reliable signal reception by dynamically adapting to varying transmission conditions, particularly when rapid changes in transmit power and received signal power occur within a short timeframe. The method involves monitoring transmit power and received signal power levels during communication. If a third transmit power and a corresponding third received signal power are detected within a selected time period after a first transmit power, the system calculates a second gain and a second offset. These values are used to adjust the relationship between transmit power and received signal power, compensating for signal variations. The second gain and second offset are derived from the first transmit power and a first received signal power, as well as the third transmit power and third received signal power. This ensures that the power control mechanism remains responsive to rapid changes, maintaining signal integrity. The method may also involve using a first gain and a first offset for initial adjustments, which are determined based on the first transmit power and first received signal power. The system may further apply a linear relationship between transmit power and received signal power, where the second gain and second offset refine this relationship to account for dynamic conditions. The method is particularly useful in environments where signal fluctuations occur frequently, such as in mobile or high-interference scenarios.
19. The method of claim 13 further comprising performing a foreign object detection procedure before causing the inverter to transmit the second transmit power.
This invention relates to power transmission systems, specifically methods for detecting and mitigating foreign objects in wireless power transfer environments. The problem addressed is the risk of overheating or damage to foreign objects that may come into contact with a wireless power transmitter, such as an inverter, during power transmission. The invention provides a safety mechanism to prevent such risks by incorporating a foreign object detection procedure before increasing the transmit power. The method involves initially operating the inverter at a first transmit power level to establish a baseline power transfer condition. Before increasing the power to a second, higher transmit power level, the system performs a foreign object detection procedure. This procedure monitors for the presence of any unintended conductive or non-conductive objects within the power transfer field. If a foreign object is detected, the system may adjust or halt power transmission to avoid potential hazards. The detection process may involve analyzing changes in power transfer efficiency, temperature, or other operational parameters that indicate the presence of an interfering object. This ensures safe and reliable wireless power delivery by proactively identifying and addressing potential risks before escalating power levels.
20. The method of claim 13 in which a transmission of power is stopped if a calibrated received power that is calculated using the second gain and the second offset is less than a selected threshold amount of a corresponding power transmitted.
This invention relates to wireless power transmission systems, specifically addressing the challenge of efficiently managing power transfer while ensuring safety and reliability. The method involves monitoring the power received by a receiving device during wireless power transmission and dynamically adjusting transmission parameters to optimize performance. A key aspect is the use of calibrated received power calculations, which incorporate a second gain and a second offset to account for variations in signal strength and environmental factors. If the calibrated received power falls below a predefined threshold relative to the transmitted power, the system automatically stops power transmission to prevent inefficiencies or potential hazards. This ensures that power transfer remains within safe and effective operating limits. The method also includes determining a first gain and a first offset for initial power calibration, which are used to establish baseline transmission parameters. These values are later refined into the second gain and second offset for more precise power management. The system continuously evaluates the calibrated received power against the threshold to maintain optimal and safe wireless power delivery. This approach enhances energy efficiency, reduces unnecessary power consumption, and mitigates risks associated with uncontrolled power transmission.
Cooperative Patent Classification codes for this invention. Click any code to explore related patents in that topic.
January 19, 2017
January 7, 2020
Browse 5M+ US patents with plain-English claim translations and AI-generated analysis.